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Power zones generated by Data Tool Yields gaps in wattage?

scott dinhoferscott dinhofer
in General Training Discussions
Bike Zones
Zone HR Power
Z1 / < 70%:
< 148
< 139
Z2 / 70-75%:
149-157
139-150
Z3 / 80-85%:
158-166
160-170
Z4 / 95-100%:
167-173
190-200
Z5 / > 110%:
> 174
> 220

queston:

curious wy there is a gap between the top of one power zone and the bottom of the other? EG top of zone 4 is 200 bottom of 5 is 220, etc. this is based on a tested FTP of 200

 

I also have a question of what wattage to ride... pre OS testing i was doing some 3x8' (4') intervals at 205/210... should i be using that to push my Z4 intervals harder? or do as prescribed above?

Comments

  • mgraffeomgraffeo
    Scott, right below the zones in the data tool is a commentary on the gaps. It says heart rate, but it holds true for power as well

    The gaps are intentional! Where did the perception that 150 beats per minute had a Zone 1 effect but 152 beats per minute had a Zone 2 effect ever come from? Sure, it looks a lot neater, but it's not really that accurate. With our focus on training with power and pace, we have refined all of our intensity guidance to drop a lot of the noise in the zones and have you focus on what matters!
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